Ground Circuits
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 Isuzu VehiCROSS, 2000 Isuzu Trooper, 2000 Isuzu Rodeo, 2000 Isuzu Hombre, and 2000 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect PCM connectors. Using an ohmmeter, check for continuity to ground on PCM harness ground terminals. See PCM GROUND CIRCUIT TERMINALS
table. Resistance should be zero ohms. If not, locate and repair open in wire.PCM GROUND CIRCUIT TERMINALS
Vehicle PCM Connector Terminal No. Amigo, Rodeo & Trooper (V6) Blue F1 Blue F40 Red S1 Red S23 Red S40 Hombre C1 18 C1 60 C2 21 Except Amigo, Hombre, Rodeo & Trooper (V6) White C7 White C8 White C9 - Reconnect PCM connectors. Using a voltmeter, connect negative lead of voltmeter to a good ground. Backprobe positive lead of voltmeter to each ground terminal. With vehicle running, voltmeter should indicate less than one volt. If voltmeter reading is greater than one volt, check for open, short, corrosion or loose connection on ground circuit. Repair as necessary.